Results of field trials with dynamic speed limits in the Netherlands: Improving throughput and safety on the A12 freeway
In the past few years, field trials with dynamic speed limits have been carried out on the Dutch freeway network. This paper discusses the tests at one of the field trial locations. On this location two test were carried out; the speed limit was lowered when there were congestion problems and during heavy rain. The field trial lasted for six months. Two new algorithms were developed to determine when the speed limit should be changed: an algorithm that uses real-time precipitation radar data to advise appropriate speed limits during heavy rain, and the SPECIALIST algorithm for resolving shockwaves. The field trials were evaluated using loop detector data as well as camera data. Changes in driver behavior, traffic flow characteristics, traffic safety, air quality and noise levels were analyzed. Also, a user acceptance study was carried out. The evaluation showed that dynamic speed limits can be applied to achieve policy objectives, such as improving throughput and traffic safety. Road users appreciate the dynamic speed limits and adapt their behavior accordingly. Undesired side effects were shown to be very limited to nonexistent.
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Availability:
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Supplemental Notes:
- Abstract reprinted with permission of IEEE.
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Corporate Authors:
Institute of Electrical and Electronics Engineers (IEEE)
3 Park Avenue, 17th Floor
New York, NY United States 10016-5997 -
Authors:
- Jonkers, E
- Wilmink, I R
- Stoelhorst, H
- Schreuder, M
- Polderdijk, S
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Conference:
- 14th International IEEE Conference on Intelligent Transportation Systems (ITSC 2011)
- Location: Washington DC, United States
- Date: 2011-10-5 to 2011-10-7
- Publication Date: 2011-10
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 2168-2173
- Monograph Title: 14th International IEEE Conference on Intelligent Transportation Systems (ITSC 2011)
Subject/Index Terms
- TRT Terms: Air quality; Algorithms; Behavior; Field tests; Loop detectors; Rain; Surveys; Traffic congestion; Traffic flow; Traffic noise; Traffic safety; Variable speed limits
- Geographic Terms: Netherlands
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 01567273
- Record Type: Publication
- ISBN: 9781457721984
- Files: TRIS
- Created Date: Jun 26 2015 1:41PM